Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drivers/virt/acrn: Fixed the PFNMAP PTE checks in acrnvmrammap. The patch series “mm: Improvements to followpte and fixes for acrn followpte”. Patch 1 fixes a number of issues I identified in the acrn driver. It’s just compile...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: fix UAF in hugetlbhandleuserfault The vmalock and hugetlbfaultmutex are removed before handling userfault, and reacquired again after handleuserfault. However, reacquiring the vmalock could lead to a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: arm64: dts: qcom: monaco: Reserve a full Gunyah metadata region. We have observed spurious “Synchronous External Abort” exceptions ESR=0x96000010 and kernel crashes on Monaco-based platforms. These faults are caused by the kernel...

Astra Linux – Vulnerability in Firefox

The return value from gfx::SourceSurfaceSkia::Map wasn’t verified, which could potentially lead to a null pointer dereferencing. This vulnerability affects Firefox versions less than 110...

Astra Linux – Vulnerability in grub2

An integer overflow flaw was discovered in the BFS file system driver within grub2. When reading a file using an indirect extent map, grub2 fails to validate the number of extent entries to be read. A maliciously crafted or corrupted BFS file system may cause an integer overflow during file...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. Therefore, the function must ensure...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf, cpumap: Handle skb as well when cleaning up ptrring. The following warning was reported when running xdpredirectcpu with both skbmode and stressmode enabled: ------------ Cut here ------------ Incorrect XDP memory type...

Astra Linux – Vulnerability in Linux

A out-of-bounds memory write flaw was discovered in the Linux kernel’s joystick devices subsystem in versions prior to 5.9-rc1. This flaw allows a local user to crash the system or potentially escalate their privileges on the system. The greatest threat posed by this vulnerability is related to...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: irqchip/realtek-rtl: The refcount leak in mapinterrupts has been fixed. The offindnodebyphandle function returns a node pointer with a incremented refcount. We should use ofnodeput on it when there is no longer a need for it. Thi...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix potential AB/BA lock issue with buffermutex and mmaplock syzbot detected a potential deadlock between the PCM’s runtime-buffermutex and the mm-mmaplock. This issue arose due to the recent fix related to racy...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: kernel/kexec: fixed the issue when the kexec target address is allocated in the CMA area. Description of the bug When I tested kexec with the latest kernel, I encountered the following warning: 40.712410 ------------ cut here ---...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Use a u64 type for the bankmap. The maximum number of MCA banks is 64 MAXNRBANKS; see a0bc32b3cacf “x86/mce: Increase the maximum number of banks to 64”. However, the bankmap, which contains a bitfield indicating whi...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm: filemap: fix nrpages calculation overflow in filemapmappages When running stress-ng on my Arm64 machine with v7.0-rc3 kernel, I encountered some very strange crash issues that appeared as “Bad page state”: "734.496287 BUG: Ba...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF: Use VMMAP instead of VMALLOC for the ringbuf area. After the commit 2fd3fb0be1d1 “KASAN, vmalloc: Unpoison VMALLOC pages after mapping”, non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enable...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix the dmabuf object leak in fastrpcmaplookup In fastrpcmaplookup, the dmabufget function is called to obtain a reference to the dmabuf object for comparison purposes. However, this reference is never released whe...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: “ice”: fixed the sizing of vsi-txqmap. The approach of having XDP queues per CPU, regardless of the user’s settings, exposed a hidden bug that could occur when the number of Rx queues differs from the number of Tx queues...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: EFI: libstub – Only “free privRuntimeMap” is returned when it is allocated. “privRuntimeMap” is only allocated when “efinovamap” is not set. Otherwise, it remains an uninitialized value. In the error path, “privRuntimeMap” is fre...

Astra Linux – Vulnerability in libjettison-java

It was discovered that Jettison before version 1.5.2 contained a stack overflow vulnerability through the map parameter. This vulnerability allows attackers to cause a Denial of Service DoS attack by using a specially crafted string...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/lima: fixed a memory leak in limaheapalloc. When limavmmapbo fails, the resources need to be deallocated; otherwise, there will be memory leaks...

Astra Linux – Vulnerability in Linux 5.10

A race condition was detected in the Linux kernel’s ebpf verifier between bpfmapupdateelem and bpfmapfreeze, due to a missing lock in the kernel/bpf/syscall.c file. In this flaw, a local user with special privileges capsysadmin or capbpf can modify the frozen mapped address space. This flaw affec...